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[devel] Corrected const_png_ in png.h to png_const_ to avoid polluting
the namespace. Added png_get_current_row_number and png_get_current_pass_number for the benefit of the user transform callback. Added png_process_data_pause and png_process_data_skip for the benefit of progressive readers that need to stop data processing or want to optimize skipping of unread data (e.g. if the reader marks a chunk to be skipped.)
This commit is contained in:
committed by
Glenn Randers-Pehrson
parent
155ce40218
commit
0a5c9c02fa
@@ -380,8 +380,10 @@ option WRITE_WEIGHTED_FILTER requires WRITE
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option WRITE_FLUSH requires WRITE
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# Note: this can be turned off explicitly, is this correct?
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# Note: these can be turned off explicitly if not required by the
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# apps implementing the user transforms
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option USER_TRANSFORM_PTR if READ_USER_TRANSFORM WRITE_USER_TRANSFORM
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option USER_TRANSFORM_INFO if READ_USER_TRANSFORM WRITE_USER_TRANSFORM
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# Any chunks you are not interested in, you can undef here. The
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# ones that allocate memory may be expecially important (hIST,
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@@ -155,6 +155,7 @@
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#define PNG_WRITE_iTXt_SUPPORTED
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#define PNG_oFFs_SUPPORTED
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#define PNG_USER_TRANSFORM_PTR_SUPPORTED
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#define PNG_USER_TRANSFORM_INFO_SUPPORTED
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#define PNG_hIST_SUPPORTED
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#define PNG_iCCP_SUPPORTED
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#define PNG_sRGB_SUPPORTED
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@@ -222,3 +222,7 @@ EXPORTS
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png_get_sCAL_fixed @214
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png_set_background_fixed @215
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png_get_io_chunk_type @216
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png_get_current_row_number @217
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png_get_current_pass_number @218
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png_process_data_pause @219
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png_process_data_skip @220
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